EP3056421A1 - Dispositif de détection de vitesse de couple d'axe central pour vélo électrique - Google Patents

Dispositif de détection de vitesse de couple d'axe central pour vélo électrique Download PDF

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Publication number
EP3056421A1
EP3056421A1 EP14890456.8A EP14890456A EP3056421A1 EP 3056421 A1 EP3056421 A1 EP 3056421A1 EP 14890456 A EP14890456 A EP 14890456A EP 3056421 A1 EP3056421 A1 EP 3056421A1
Authority
EP
European Patent Office
Prior art keywords
central
axle
magnetic conductive
electric
sensing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14890456.8A
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German (de)
English (en)
Other versions
EP3056421A4 (fr
EP3056421B1 (fr
Inventor
Qinghua Wang
Jun Ding
Benyou ZUO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bafang Electric Suzhou Co Ltd
Original Assignee
Suzhou Bafang Electric Motor Science Technology Co Ltd
SUZHOU BAFANG ELECTRIC MOTOR SCIENCE TECHNOLOGY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Bafang Electric Motor Science Technology Co Ltd, SUZHOU BAFANG ELECTRIC MOTOR SCIENCE TECHNOLOGY CO Ltd filed Critical Suzhou Bafang Electric Motor Science Technology Co Ltd
Priority to PL14890456T priority Critical patent/PL3056421T3/pl
Publication of EP3056421A1 publication Critical patent/EP3056421A1/fr
Publication of EP3056421A4 publication Critical patent/EP3056421A4/fr
Application granted granted Critical
Publication of EP3056421B1 publication Critical patent/EP3056421B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/45—Control or actuating devices therefor
    • B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof

Definitions

  • the present invention relates to a part of an electric bike, specifically to an electric-bike central-axle torque speed sensing device.
  • An electric bike because of its characteristics such as lightweight, energy saving and free of pollution, is increasingly used in our country.
  • the speed is adjusted with a handle, i.e. controlling the output power of the motor with the handle.
  • a torque sensor to convert the foot pedal force into a corresponding voltage signal, which is outputted to control the operation power of the motor after being amplified by a motor control circuit board, thus significantly saving energy.
  • Sensors currently used in the electric bikes are mostly Hall rotational speed sensors, which are attached with magnet steel to the surface of rotating components of the electric bike such as a central axle or a flywheel, with a Hall element mounted on non-rotating components such as a frame spindle.
  • this electric bike sensor When a person pedals a bike pedal, the central axle or flywheel rotates to produce changing potential corresponding to the torsional moment and outputs a corresponding voltage signal, which can control the output power of the motor after being amplified.
  • this electric bike sensor has the following problems:
  • a purpose of the present invention is to provide an electric-bike central-axle torque speed sensing device with high sensing sensitivity and accuracy, so as to solve the above problems.
  • the electric-bike central-axle torque speed sensing device comprises a central axle fitted in a five-way pipe, a left crank and a right crank secured on both ends of the central axle, and a chain wheel sleeved on the central axle; sleeved on the central axle is a torque pipe that will produce circumferential deformation when it is subjected to a circumferential torsional force, the torque pipe being secured at one end to the central axle and secured at the other end to the chain wheel; on the outer wall of the torque pipe is secured a circle of magnetic conductive alloy sheet clinging to this torque pipe, with the magnetic conductive alloy sheet provided densely with holes; the magnetic conductive alloy sheet is provided on its periphery with a coil used for detecting magnetic change, with the coil connected to a motor controller via a signal processor; inside the five-way pipe is also secured a speed-sensitive Hall connected to the signal processor, with the central axle provided with a speed-sensitive magnet steel corresponding to the
  • the signal processor is a signal processing circuit board (6) disposed in the five-way pipe.
  • the speed-sensitive Hall is integrated on the signal processing circuit board.
  • the holes at least two or so annular hole distribution bands distributed symmetrically left and right, with the holes in each of the annular hole distribution bands all uniformly distributed at intervals along the circumferential direction of the magnetic conductive alloy sheet.
  • annular hole distribution bands there are totally two annular hole distribution bands.
  • the holes are elongated holes.
  • the holes are inclined with respect to the longitudinal direction of the magnetic conductive alloy sheet.
  • the angle between the longitudinal directions of the holes and the magnetic conductive alloy sheet is 45°.
  • the five-way pipe is provided inside with a magnetic conductive sleeve covering the coil and a magnetic conductive gasket.
  • the five-way pipe is provided inside with a positioning bushing, which is axially locked by pressing both ends of the five-way pipe into a left wrist guard and a right wrist guard, glue being used between the signal processing circuit board and the positioning bushing for sealing and securing, the coil being wound around the positioning bushing.
  • Figs. 1-4 show a specific example of this electric-bike central-axle torque speed sensing device of the present invention, which mainly comprises the following parts: a left wrist guard 1, a right wrist guard 2, a central axle 4, a torque pipe 5, a signal processing circuit board 6, a magnetic conductive alloy sheet, a magnetic conductive gasket 8, an outgoing line 9, a positioning bushing 10, a wire retainer 11, a speed-sensitive steel magnet 12, a left crank 13, a right crank 14, a bolt 15, a chain wheel 16, a magnetic conductive alloy sheet 17, and a speed-sensitive Hall 18.
  • the central axle 4 goes through the five-way pipe (not shown in the figures), with both ends of the central axle 4 secured and connected to the left crank 13 and the right crank 14, respectively through the bolt 15; sleeved on the central axle 4 is the chain wheel 16 located at the right side of the five-way pipe, which is provided on both ends with the left wrist guard 1 and the right wrist guard 2, respectively.
  • the left and right cranks involved in this example are fitted with the electric-bike pedals in actual use, which are pedaled to rotate by a person.
  • a torque pipe 5 that will produce circumferential deformation when it is subjected to a circumferential torsional force, the torque pipe 5 being secured at one end to the central axle 4 and secured at the other end to the chain wheel 16; on the outer wall of the torque pipe 5 is secured a circle of magnetic conductive alloy sheet 20 clinging to this torque pipe, with the magnetic conductive alloy sheet 20 provided densely with holes 17; the magnetic conductive alloy sheet 20 is provided on its periphery with a coil 19 used for detecting magnetic change, with the coil connected to a motor controller via a signal processor; inside the five-way pipe is also secured a speed-sensitive Hall connected to the signal processor, with the central axle 4 provided with a speed-sensitive magnet steel corresponding to the speed-sensitive Hall.
  • the holes 17 on the magnetic conductive alloy sheet 20 have the function of enhancing deformability of the magnetic conductive alloy sheet 20, and also have the function of preventing structure damage of the magnetic conductive alloy sheet 20 due to frequent deformation.
  • the signal processor is a signal processing circuit board 6 disposed in the five-way pipe.
  • the signal processor can also use other structure forms of being located outside the five-way pipe.
  • the speed-sensitive Hall 18 is integrated directly on this signal processing circuit board 6.
  • the holes 17 may be various types of holes, such as a round hole, a square hole and an oval hole, with an elongated hole used in this example.
  • On the magnetic conductive alloy sheet 20 are formed by the holes 17 at least two or so (two in this example) annular hole distribution bands distributed symmetrically left and right (i.e., the hole distribution bands are annular, as shown in Fig. 3 ), with the holes 17 in each of the annular hole distribution bands all uniformly distributed at intervals along the circumferential direction of the magnetic conductive alloy sheet 20.
  • the holes 17 are inclined with respect to the longitudinal direction (i.e. the axial direction) of the magnetic conductive alloy sheet 20.
  • the angle between (the longitudinal direction of) the holes 17 and the longitudinal direction of the magnetic conductive alloy sheet 20 is 45°. Because the holes are distributed symmetrically left and right, the above contents can be understood as follows: The angle between the longitudinal directions of the holes 17 at the left side and the magnetic conductive alloy sheet 20 is +45°, while the angle between the longitudinal directions of the holes 17 at the right side and the magnetic conductive alloy sheet 20 is -45°, as shown in Fig. 3 .
  • the five-way pipe in this example is provided inside with a magnetic conductive sleeve 7 covering the coil 19 and a magnetic conductive gasket 8, with the magnetic conductive sleeve 7 and the magnetic conductive gasket 8 playing an role of magnetic shielding for the coil 19 so as to improve the magnetic interference resistance of the coil 19.
  • the signal processing circuit board 6 and the coil 19 are specifically assembled as the follows:
  • the five-way pipe is provided inside with a positioning bushing 10, which is axially locked by pressing both ends of the five-way pipe into a left wrist guard 1 and a right wrist guard 2, glue being used between the signal processing circuit board 6 and the positioning bushing 10 for sealing and securing, the coil 19 being wound around the positioning bushing 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
EP14890456.8A 2014-04-22 2014-06-06 Dispositif de détection de vitesse de couple d'axe central pour vélo électrique Active EP3056421B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14890456T PL3056421T3 (pl) 2014-04-22 2014-06-06 Urządzenie do pomiaru prędkości obrotowej osi centralnej roweru elektrycznego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410163214.0A CN105015692A (zh) 2014-04-22 2014-04-22 一种电动自行车中轴力矩速度传感装置
PCT/CN2014/079330 WO2015161545A1 (fr) 2014-04-22 2014-06-06 Dispositif de détection de vitesse de couple d'axe central pour vélo électrique

Publications (3)

Publication Number Publication Date
EP3056421A1 true EP3056421A1 (fr) 2016-08-17
EP3056421A4 EP3056421A4 (fr) 2017-08-09
EP3056421B1 EP3056421B1 (fr) 2019-04-17

Family

ID=54331660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14890456.8A Active EP3056421B1 (fr) 2014-04-22 2014-06-06 Dispositif de détection de vitesse de couple d'axe central pour vélo électrique

Country Status (9)

Country Link
EP (1) EP3056421B1 (fr)
CN (1) CN105015692A (fr)
DK (1) DK3056421T3 (fr)
ES (1) ES2734985T3 (fr)
HU (1) HUE044997T2 (fr)
PL (1) PL3056421T3 (fr)
PT (1) PT3056421T (fr)
TR (1) TR201909979T4 (fr)
WO (1) WO2015161545A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10551216B2 (en) 2016-03-02 2020-02-04 Infineon Technologies Ag Shaft-integrated angle sensing device for e-bike and e-bike comprising such device
WO2020114890A3 (fr) * 2018-12-07 2020-08-06 Robert Bosch Gmbh Unité de détection de vitesse de rotation et/ou d'angle de rotation et dispositif de travail

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI604982B (zh) * 2016-07-18 2017-11-11 行安機電股份有限公司 扭力偵測器
CN106275226A (zh) * 2016-08-31 2017-01-04 太仓市悦博电动科技有限公司 一种用于自行车或辅助动力自行车的双边功率计
CN106627964A (zh) * 2016-11-22 2017-05-10 昆山朗德森机电科技有限公司 用于电动自行车的扭矩传感器及检测系统
CN106904243B (zh) * 2017-04-20 2022-08-30 李纪召 电动自行车传动装置和配置该装置的电动自行车
CN108791681A (zh) * 2017-05-05 2018-11-13 捷安特电动车（昆山）有限公司 一种测量中轴双边力矩、位置角度、转速及功率的装置
JP7149325B2 (ja) * 2017-05-05 2022-10-06 捷安特電動車（昆山）有限公司 乗物の運転パラメータの検出装置
CN108801297A (zh) * 2017-05-05 2018-11-13 捷安特电动车（昆山）有限公司 一种检测中轴双边力矩、位置角度、转速及功率的装置
CN107054555A (zh) * 2017-06-08 2017-08-18 杭州欣硬科技有限公司 变速自行车及其变挡机构及装置
CN107672732A (zh) * 2017-11-08 2018-02-09 广州市快易达工贸有限公司 一种应用动态传感器电路组合的中置电机
CN108839751B (zh) * 2018-05-23 2024-03-22 铂金橙智能科技(太仓)有限公司 同轴中置驱动电机系统及助力车
CN108583768A (zh) * 2018-07-02 2018-09-28 常州野人电子科技有限公司 一种电动车动力系统、扭矩测量装置及其工作方法
CN109506815B (zh) * 2018-12-26 2020-12-01 重庆理工大学 一种悬挂式电动自行车力矩传感器
CN109591945A (zh) * 2019-01-15 2019-04-09 浙江鑫驱科技有限公司 一种方便安装的助力脚踏车扭矩检测机构
CN109665051B (zh) * 2019-01-25 2024-02-06 苏州盛亿电机有限公司 一种高精度中轴踏力感测装置
CN109649569B (zh) * 2019-02-20 2024-03-29 康献兵 塔基扭矩传感装置及电动自行车
CN113135253A (zh) * 2020-01-20 2021-07-20 八方电气(苏州)股份有限公司 电动自行车速度力矩传感器系统及电动自行车
CN115465399A (zh) * 2022-09-29 2022-12-13 广东威灵电机制造有限公司 力矩及速度传感装置及电动自行车

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US5816599A (en) * 1995-06-14 1998-10-06 Koyo Electronics Industries Co., Ltd Bicycle torque detection apparatus and bicycle including the same
CN201177539Y (zh) * 2008-01-31 2009-01-07 严东红 电动自行车磁致扭矩传感装置
DE102010039852A1 (de) * 2010-08-27 2012-03-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Erfassung eines Offsetfehlers eines Drehmomentsensors eines Fahrrad-Pedalantriebs
CN101973357B (zh) * 2010-10-28 2012-08-15 苏州工业园区同盛车业有限公司 电动自行车力矩和速度传感器
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CN103171733B (zh) * 2013-04-09 2015-09-30 苏州八方电机科技有限公司 一种电动自行车中轴力矩传感装置
CN203274988U (zh) * 2013-05-27 2013-11-06 深圳市森浦精机科技有限公司 中轴力矩测量装置
CN203497121U (zh) * 2013-10-12 2014-03-26 深圳市森浦精机科技有限公司 轮毂电机内设的踏力检测装置
CN103661762B (zh) * 2013-11-18 2017-10-10 新安乃达驱动技术(上海)有限公司 电动助力自行车及其中置电机驱动系统
CN203806093U (zh) * 2014-04-22 2014-09-03 苏州八方电机科技有限公司 一种电动自行车中轴力矩速度传感装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10551216B2 (en) 2016-03-02 2020-02-04 Infineon Technologies Ag Shaft-integrated angle sensing device for e-bike and e-bike comprising such device
WO2020114890A3 (fr) * 2018-12-07 2020-08-06 Robert Bosch Gmbh Unité de détection de vitesse de rotation et/ou d'angle de rotation et dispositif de travail

Also Published As

Publication number Publication date
EP3056421A4 (fr) 2017-08-09
DK3056421T3 (da) 2019-07-15
PL3056421T3 (pl) 2019-11-29
EP3056421B1 (fr) 2019-04-17
TR201909979T4 (tr) 2019-08-21
ES2734985T3 (es) 2019-12-13
CN105015692A (zh) 2015-11-04
HUE044997T2 (hu) 2019-11-28
WO2015161545A1 (fr) 2015-10-29
PT3056421T (pt) 2019-07-22

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